Home / 576,923.40-865,385.10-387,966.60

Finding the Fourth Proportional to 576,923.40, 865,385.10 and 387,966.60

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Solution

The fourth proportional to 576,923.40, 865,385.10 and 387,966.60 is: 581,949.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,923.40 : 865,385.10 = 387,966.60 : x
  2. Step 2: Convert to fraction form
    576,923.40/865,385.10 = 387,966.60/x
  3. Step 3: Cross multiply
    576,923.40x = 865,385.10 × 387,966.60
  4. Step 4: Simplify right side
    576,923.40x = 335,740,514,937.66
  5. Step 5: Solve for x
    x = 335,740,514,937.66/576,923.40
  6. Step 6: Final answer
    x = 581,949.90

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.